50 ft 3/8″ × 5/8″ Line Set for Mini Split – Pre-Insulated HVAC Copper Refrigerant Tubing

High-quality 50 ft 3/8″ × 5/8″ pre-insulated line set designed for mini split air conditioners and heat pump systems. Perfect for professional HVAC installers, contractors, and distributors in the US and international markets.

The Mini Split Long Line Set is twin already. So buy it now.

What This 50 ft Mini Split Line Set Includes

This complete HVAC line set package includes:

• Pre-insulated copper refrigerant tubing – 3/8″ (liquid) & 5/8″ (suction)

• Pre-flared connections and flare nuts for fast installation

• Durable insulation to minimize energy loss

• Protective cover and packaging for secure shipment

Manufactured with precision, this line set ensures reliable refrigerant flow and system performance for residential and commercial applications.

Technical Specifications – Engineered for Performance

Premium Copper Refrigerant Tubing

• Copper Material: 99.9% pure seamless copper

• Diameters: 3/8″ liquid line & 5/8″ suction line

• Length: 50 ft (15 meters)

• Pre-flared ends with standard nuts for easy installation

Copper’s excellent thermal conductivity supports efficient mini split system performance while providing durable corrosion resistance.

High-Density Insulation

• UV and moisture-resistant insulation

• Helps control condensation and prevent energy loss

• Suitable for various climate zones across the US

• Available in multiple insulation thicknesses

Proper insulation ensures optimal cooling efficiency and long service life.

Key Benefits of This Mini Split Line Set

Ideal for Mini Split & Heat Pump HVAC Systems

Compatible with most ductless mini split and heat pump systems in residential and commercial buildings. Trusted by HVAC technicians for reliable performance and easy installation.

Faster Installation & Improved Efficiency

Pre-flared ends and included flare nuts save time on site, reduce labor costs, and ensure leak-proof connections every time.

Enhanced System Durability

High-quality copper and robust insulation maximize refrigerant performance while protecting the line set from environmental stresses.

Features of pipe insulation tubing:

Applications – Where to Use This Line Set

This 3/8″ × 5/8″ mini split line set is perfect for:

• Residential ductless AC units

• Multi-zone mini split systems

• Heat pump installations

• Light commercial HVAC projects

• Replacement and retrofit jobs

Ideal for HVAC professionals and DIY installers alike due to its versatility and performance.

H2: Installation Tips for Best Performance

To ensure a successful and long-lasting installation:

1. Measure required length before cutting the line set.

2. Check insulation continuity to avoid energy loss.

3. Torque flare nuts correctly to prevent refrigerant leaks.

4. Slope suction line properly for moisture drainage.

Following these HVAC best practices helps ensure smooth operation and reduces maintenance needs.

Mini Split Line Set

Size	Length	Insulation White PE	Flame Resistant
1/4+3/8	15m/20m/25m/30m/50m	8mm/9mm/10mm/13mm/19mm/25.4mm	M1/B1
1/4+1/2	15m/20m/25m/30m/50m	8mm/9mm/10mm/13mm/19mm/25.4mm	M1/B1
1/4+5/8	15m/20m/25m/30m/50m	8mm/9mm/10mm/13mm/19mm/25.4mm	M1/B1
3/8+5/8	15m/20m/25m/30m/50m	8mm/9mm/10mm/13mm/19mm/25.4mm	M1/B1
3/8+3/4	15m/20m/25m/30m/50m	8mm/9mm/10mm/13mm/19mm/25.4mm	M1/B1
1/2+3/4	15m/20m/25m/30m/50m	8mm/9mm/10mm/13mm/19mm/25.4mm	M1/B1
3/8+7/8	15m/20m/25m/30m/50m	8mm/9mm/10mm/13mm/19mm/25.4mm	M1/B1

1/4 + 3/8 AC line set used for 0.75TON - 1.0TON mini split air conditioner.

1/4 + 1/2 Mini split line set used for 1.5TON - 2.0TON mini split air conditioning.

1/4 + 5/8 Copper line set used for 2.0TON - 2.5TON split air conditioner system.

3/8 + 5/8 Insulated copper tube apply for 3.0TON - 4.0TON ductless mini split air conditioner.

3/8 + 3/4 Insulated copper tubing used for 4.5TON - 6.0TON split air conditioner installation.

3/8 + 7/8 Insulated copper piping apply for 6.0TON - 8.0TON ductless mini split air conditioner.

Air conditioning copper line sets 1/4 + 3/8 used for 0.75P and 1P split air conditioning.

Copper pipe kit 1/4 + 1/2 commonly used for 1.5P and 2P mini split air conditioners.

1/4 + 5/8 Insulated copper line set used for 2P and 2.5air conditioner system.

3/8 + 5/8 Mini-split copper line set apply for 3P and 4P ductless mini split air conditioner.

3/8 + 3/4 Copper pipe kit used for 4.5P and 6P split aircon installation.

3/8 + 7/8 Insulated copper pipe apply for 6P - 8p TON ductless mini split air conditioner.

1/4 + 3/8 Mini split line set used for 9000BTU and 12000 BTU split air conditioner.

All copper line set 1/4 + 1/2 commonly used for 12000 BTU and 18000 BTU mini split air conditioners.

1/4 + 5/8 Insulated copper line set used for 24000 BTU and 30000 BTU air conditioner system.

3/8 + 5/8 Mini-split line set apply for 36000 BTU and 48000 ductless air conditioner.

3/8 + 3/4 HVAC lineset used for 54000 BTU and 72000 split air conditioner installation.

3/8 + 7/8 Insulated copper piping apply for 72000 BTU - 96000 BTU ductless mini split air conditioner.

Aircon copper line set 1/4 + 3/8 used for 9K and 12K split air conditioner.

High quality copper line set 1/4 + 1/2 commonly used for 12K and 18K mini split air conditioners.

1/4 + 5/8 Insulated copper line set used for 24K and 30K air conditioner system.

3/8 + 5/8 Mini-split line set apply for 36K and 48K ductless air conditioner.

3/8 + 3/4 HVAC lineset used for 54K and 72K split air conditioner installation.

3/8 + 7/8 Insulated copper pipe apply for 72K - 96K ductless mini split air conditioner.

Why Choose 50 ft 3/8" x 5/8" Line Set for Mini Split from DABUND PIPE

We are manufacturer of mini split line set since 2008 years, have good experience of producing and exporting. We have cooperated 9 years forwarder, can guarantee the shipment. Every week we load at least 6-8 40HQ to different countries. Choose Dabund You will win the business.

Individual pre-insulated rolls to perfectly fit every ductless mini-splits, VRF, heat pumps and unitary systems installation.

Quality products with competitive pricing

Peace of mind with professional services

DABUND FACTORY

We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts

SGS Certificate

Mini Split Line Set is made of Polypropylene or Black Rubber with UV Resistant, meets ASTM E 84, UL94, ASTM D1056 and ASTM G 21

Exhibition

We join the exhibitions all over the word, just to facilitate customers to experience our mini split line set face to face.

FAQ

1.Q:What is your payment terms?

A:TT,L/C AT SIGHT,CREDIT CARD etc

2.Q:What is your delivery terms?

A:EXW, FOB, CFR, CIF etc

3.Q:Are you trading company or manufacturer?

A:Manufacturer

4.Q:May I get a sample?

A:Yes, we can send you 3pieces free samples.

   You just charge for the express cost is ok.

5.Q:Can I print my logo?

A:Yes of cause, we accept OEM and ODM.

6.Q:How long is your delivery time?

A:Usually 15-20days, if urgent, we can arrange to do in advance and delivery fast.

7.Can this line set be used with all mini split brands?

Yes — this pre-insulated 3/8″ × 5/8″ line set is compatible with most mini split and ductless AC brands available in the US and international markets. Always verify system specifications before installation.

8.Can I cut this line set to a custom length?

Yes, the copper tubing can be trimmed to required length, but proper flaring and sealing practices must be followed.

9.Is this suitable for outdoor exposed installations?

The insulation is moisture and UV resistant; however, additional protective conduit or line set cover is recommended for extended outdoor exposure.